ASTROSAT CZTI

Data Quality Report

Orbit 37197

Creation date: 2024-06-27T21:36:47.291012
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_079T01_9000005284_37197cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37197cztM0_level2_quad_clean.evt
Size (bytes)448,433,28065,761,920
Size427.7 MB 62.7 MB
Events in quadrant A3,233,370396,829
Events in quadrant B3,532,226398,819
Events in quadrant C3,180,296398,581
Events in quadrant D3,224,434374,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133403
B0144192
C0129462
D0137242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6048480.793651%
B6048260.429894%
C6048170.281085%
D6048791.306217%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9153 6050 31 31 0.34% 0.51%
B 9153 6050 8 8 0.09% 0.13%
C 9153 6050 12 12 0.13% 0.20%
D 9153 6050 52 52 0.57% 0.86%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 283632 1970.87 707 692 143.6
A 15 237 134428 931.56 707 692 143.6
A 9 143 42728 292.81 707 692 143.6
B 5 184 365225 2698.94 702 683 135.1
B 0 213 211130 1558.08 702 683 135.1
B 0 155 71866 527.01 702 683 135.1
C 15 214 262583 1609.29 691 696 162.7
C 0 10 69117 420.44 691 696 162.7
C 0 207 69055 420.06 691 696 162.7
D 2 249 288128 1710.16 687 667 168.1
D 13 249 81153 478.83 687 667 168.1
D 2 153 53826 316.25 687 667 168.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter